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  1. 73's de Edd

    Whirlpool Side by Side American style Fridge Freezer too hot and too cold

    Sir Que . . . . . . . . . . . . (Spanish for what) You say . . . . I am perplexed by the function of the serpentine trace on the board, is anyone able to clarify. Since its being inter positioned within a whole composite trace that is being a continuation of the AC line N from one side of...
  2. 73's de Edd

    Input Hum - Yorkville Amplifier

    Sir gerryt . . . . . . (and that's being very heav-E E E E E E E E on the Teeeeeeeeeeeeeeeeeeee !) How 'bouts us doing some super dooper uber- techno sniffing, using but a mere length of hook up wire and a 47 or 100'ish ufd @16(+) E-cap. I have re-diddled-ed-ed your units schema of the sole...
  3. 73's de Edd

    Tektronix 465 oscilloscope with garbled display

    Sir PluggerWorks . . . . . After viewing this . . . . +5V rail is bad, down to 4V and has a FIERCE 3V ripple level riding it . The 5000µF capacitor has declined down to 250µF and it ESR's out as 140 Ohms. C1552 a 5000uF. With having all of that high level of a ripple voltage . . . ...
  4. 73's de Edd

    Need help about switch power supply circuit

    Sir AdhiWay . . . . Combine all of the answers you already received and you will have solved the problem. My only request is your confirming that the transformer core materiel that you used is of the ferrite family . . .as specified *****. . . and that you are NOT trying to use a common...
  5. 73's de Edd

    Tube bias circuit

    HEY ! YOU'SE GUYS . . . . . Looks like this schematic copying originated or was passed on from . . . https://schematicheaven.net/hifiamps/rca_mi-12188a_65w_2_gtr_45w.pdf There you see the original 807 tubes receiving their 1st grids biasing by common "grid biasing" wherein they have their...
  6. 73's de Edd

    old car stereo LCD backlight

    Sir die.nard . . . . . . I wuz a gonna . . . . . in keeping along with the same sidetracking of semantics . . . as this thread was earlier evolving into. Along with the EXTREME tangential in the troubleshooting erroneous direction now developing. I say again . . . I WUZ A GONNA . . . . take...
  7. 73's de Edd

    Identifying Socket 7 Mobo Inductor Coil

    Believe that is right. . . . Looking at a BEEEEEEEEEG blowup and both sides. I never seen such in ALL of my times.
  8. 73's de Edd

    Identifying Socket 7 Mobo Inductor Coil

    Sir SamBushman I then noticed the Inductor Coil next to the CPU was damaged. Specifically, the ring the wire is wrapped around has split in 2. My learned eye seems to view that as being a 2/3 + 1/3 division, rather than your suggested 1/2 +1/2.split Can you take a toothpick or sharp...
  9. 73's de Edd

    Door King 1830-01 POTS telephone hum prevents data send/receive.

    Sir fred3 . . . . . Ol' Fred jes' sed . . . . . We just tried disconnecting the terminal #3 ground wire. I tested it by calling into the gate and this time did not hear the hum. Yet, when I tried to transmit data, it continually failed as before. Look at my photo 2 and then back to photo 1...
  10. 73's de Edd

    I have question marks about my power supply circuit anyone can help?

    Revision . . . . . A.I. generated “ techno” spam. All of the users other posts seem like so.
  11. 73's de Edd

    I have question marks about my power supply circuit anyone can help?

    What is # 8 . . . . A.I. generated spam ?
  12. 73's de Edd

    SMPS repair

    Where do dat deres puffy capacitor bees ? I THINKS ? I SEES ! It can onliest bees . . . . on the second photo down . . . the 2nd cap inward , at the top edge. Negative terminal polarity is located at the to edge of the board. Now you want to change BOTH caps . . . . . it and its identical...
  13. 73's de Edd

    Need help troubleshooting pcb relay

    Hey Mack . . . . . . You still game here ? . . . . . . . or moving on to YET another forum. I'm still waiting to find out what that collector voltage (now being 6 VDC you say) of Q6 is, when you short out its base to emitter or another same ground point. With there then being no base voltage...
  14. 73's de Edd

    Help identifying a transistor

    Sir Andrew Ceeeeeeeeeeeeee . . . . . . . I started on a write up for analysis of your unit . . . . . but don't have time to complete now, plus I need some visual inspection, in your hand, for confirmations . Firstly, on that somewhat shaky pie in the sky info received on your transistor...
  15. 73's de Edd

    Need help troubleshooting pcb relay

    AB-—SO—ROOT —- LEY . . . . . . Ya’ gots it !
  16. 73's de Edd

    Need help troubleshooting pcb relay

    Your test results are additionally confirming what I am definitely wanting to believe. THAT there is something rotten from Collector to Emitter and/or Base of that relay driver transistor. BUT there is also the uncertainity / validity of your testing, with the transistor still soldered into...
  17. 73's de Edd

    Need help troubleshooting pcb relay

    Sir @Macknumber9 . . . . . O.K . . . . .one mo'time . . . . . reduced to simplified semantics of using my very best Go Dog Go . . . . . or . . . .See Dick and Jane Play . . . play play play . . . see them play. You have the compressor switch on relay there and it has its 12 VDC coil...
  18. 73's de Edd

    Need help troubleshooting pcb relay

    Sir Mack . . . . What do you mean by lift collector? You need to disconnect . . . . the other end of the coil relay terminal's solder blob connection . . . . or the solder blob connection to the blue relays driver transistors collector connection. Do this either by solder sucking or rosin flux...
  19. 73's de Edd

    Need help troubleshooting pcb relay

    Sir Macknumber9 . . . . . I am reading 12vdc on one side and 6vdc on the other side. Are both legs of the coil supposed to read same voltage or should one side read ground voltage? Soooooooooooooo . . . . with you finding a full 12VDC one one terminal of the relay you now know WHERE the...
  20. 73's de Edd

    Sogo jpn-650 circuit not working

    Can we get a good closeup of the components side of the center board, as that is where all of the action is .
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